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<div class="title">test_merge.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;gtest/gtest.h&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;faiss/IndexIVFFlat.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;faiss/IndexIVFPQ.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;faiss/IndexFlat.h&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;faiss/MetaIndexes.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;faiss/FaissAssert.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;faiss/VectorTransform.h&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;faiss/OnDiskInvertedLists.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">// Main function to test</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">// Merge index1 into index0. Works on IndexIVF&#39;s and IndexIVF&#39;s</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment">// embedded in a IndexPreTransform</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keywordtype">void</span> merge_into(Index *index0, Index *index1, <span class="keywordtype">bool</span> shift_ids) {</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    FAISS_THROW_IF_NOT (index0-&gt;d == index1-&gt;d);</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    IndexIVF *ivf0 = <span class="keyword">dynamic_cast&lt;</span>IndexIVF *<span class="keyword">&gt;</span>(index0);</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    IndexIVF *ivf1 = <span class="keyword">dynamic_cast&lt;</span>IndexIVF *<span class="keyword">&gt;</span>(index1);</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <span class="keywordflow">if</span> (!ivf0) {</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;        IndexPreTransform *pt0 = <span class="keyword">dynamic_cast&lt;</span>IndexPreTransform *<span class="keyword">&gt;</span>(index0);</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        IndexPreTransform *pt1 = <span class="keyword">dynamic_cast&lt;</span>IndexPreTransform *<span class="keyword">&gt;</span>(index1);</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;        <span class="comment">// minimal sanity check</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        FAISS_THROW_IF_NOT (pt0 &amp;&amp; pt1);</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        FAISS_THROW_IF_NOT (pt0-&gt;chain.size() == pt1-&gt;chain.size());</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; pt0-&gt;chain.size(); i++) {</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;            FAISS_THROW_IF_NOT (<span class="keyword">typeid</span>(pt0-&gt;chain[i]) == <span class="keyword">typeid</span>(pt1-&gt;chain[i]));</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        }</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        ivf0 = <span class="keyword">dynamic_cast&lt;</span>IndexIVF *<span class="keyword">&gt;</span>(pt0-&gt;index);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        ivf1 = <span class="keyword">dynamic_cast&lt;</span>IndexIVF *<span class="keyword">&gt;</span>(pt1-&gt;index);</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    }</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    FAISS_THROW_IF_NOT (ivf0);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    FAISS_THROW_IF_NOT (ivf1);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    ivf0-&gt;merge_from (*ivf1, shift_ids ? ivf0-&gt;ntotal : 0);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="comment">// useful for IndexPreTransform</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    index0-&gt;ntotal = ivf0-&gt;ntotal;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    index1-&gt;ntotal = ivf1-&gt;ntotal;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;}</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;};</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structTempfilename.html">   63</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structTempfilename.html">Tempfilename</a> {</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keyword">static</span> pthread_mutex_t mutex;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    std::string filename;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <a class="code" href="structTempfilename.html">Tempfilename</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> *prefix = <span class="keyword">nullptr</span>) {</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        pthread_mutex_lock (&amp;mutex);</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        filename = tempnam (<span class="keyword">nullptr</span>, prefix);</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        pthread_mutex_unlock (&amp;mutex);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    }</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    ~<a class="code" href="structTempfilename.html">Tempfilename</a> () {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keywordflow">if</span> (access (filename.c_str(), F_OK)) {</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;            unlink (filename.c_str());</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        }</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    }</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">char</span> *c_str() {</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keywordflow">return</span> filename.c_str();</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;    }</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;};</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;pthread_mutex_t Tempfilename::mutex = PTHREAD_MUTEX_INITIALIZER;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">// parameters to use for the test</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keywordtype">int</span> d = 64;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="keywordtype">size_t</span> nb = 1000;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="keywordtype">size_t</span> nq = 100;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="keywordtype">int</span> nindex = 4;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="keywordtype">int</span> k = 10;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="keywordtype">int</span> nlist = 40;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="keyword">typedef</span> <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> idx_t;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structCommonData.html">  100</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structCommonData.html">CommonData</a> {</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    std::vector &lt;float&gt; database;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    std::vector &lt;float&gt; queries;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    std::vector&lt;idx_t&gt; ids;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a> quantizer;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <a class="code" href="structCommonData.html">CommonData</a>(): database (nb * d), queries (nq * d), ids(nb), quantizer (d) {</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; nb * d; i++) {</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;            database[i] = drand48();</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        }</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; nq * d; i++) {</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            queries[i] = drand48();</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        }</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nb; i++) {</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            ids[i] = 123 + 456 * i;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        }</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        { <span class="comment">// just to train the quantizer</span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> iflat (&amp;quantizer, d, nlist);</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            iflat.<a class="code" href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">train</a>(nb, database.data());</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        }</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    }</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;};</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;<a class="code" href="structCommonData.html">CommonData</a> cd;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment">/// perform a search on shards, then merge and search again and</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">/// compare results.</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment"></span><span class="keywordtype">int</span> compare_merged (<a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> *index_shards, <span class="keywordtype">bool</span> shift_ids,</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;                    <span class="keywordtype">bool</span> standard_merge = <span class="keyword">true</span>)</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;{</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;    std::vector&lt;idx_t&gt; refI(k * nq);</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    std::vector&lt;float&gt; refD(k * nq);</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    index_shards-&gt;<a class="code" href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">search</a>(nq, cd.queries.data(), k, refD.data(), refI.data());</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <a class="code" href="structTempfilename.html">Tempfilename</a> filename;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    std::vector&lt;idx_t&gt; newI(k * nq);</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    std::vector&lt;float&gt; newD(k * nq);</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keywordflow">if</span> (standard_merge) {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            merge_into(index_shards-&gt;at(0), index_shards-&gt;at(i), shift_ids);</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        }</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        index_shards-&gt;sync_with_shard_indexes();</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        std::vector&lt;const faiss::InvertedLists *&gt; lists;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;        <a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a> *index0 = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        <span class="keywordtype">size_t</span> ntotal = 0;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            <span class="keyword">auto</span> index_ivf = <span class="keyword">dynamic_cast&lt;</span><a class="code" href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a>*<span class="keyword">&gt;</span>(index_shards-&gt;at(i));</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;            assert (index_ivf);</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            <span class="keywordflow">if</span> (i == 0) {</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                index0 = index_ivf;</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            }</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;            lists.push_back (index_ivf-&gt;invlists);</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;            ntotal += index_ivf-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        }</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        <span class="keyword">auto</span> il = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a>(</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                        index0-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">nlist</a>, index0-&gt;<a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>,</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;                        filename.c_str());</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        il-&gt;merge_from(lists.data(), lists.size());</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        index0-&gt;replace_invlists(il, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        index0-&gt;<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> = ntotal;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;    }</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    <span class="comment">// search only on first index</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    index_shards-&gt;at(0)-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a>(nq, cd.queries.data(),</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                                k, newD.data(), newI.data());</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keywordtype">size_t</span> ndiff = 0;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; k * nq; i++) {</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        <span class="keywordflow">if</span> (refI[i] != newI[i]) {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            ndiff ++;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    }</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <span class="keywordflow">return</span> ndiff;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;}</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">// test on IVFFlat with implicit numbering</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;TEST(MERGE, merge_flat_no_ids) {</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d);</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        index_shards.add_shard (</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;            <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&amp;cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    }</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">add</a>(nb, cd.database.data());</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordtype">size_t</span> prev_ntotal = index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordtype">int</span> ndiff = compare_merged(&amp;index_shards, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    EXPECT_EQ (prev_ntotal, index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>);</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    EXPECT_EQ(0, ndiff);</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;}</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment">// test on IVFFlat, explicit ids</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;TEST(MERGE, merge_flat) {</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        index_shards.add_shard (</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;             <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&amp;cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    }</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;    EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;    index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;    <span class="keywordtype">int</span> ndiff = compare_merged(&amp;index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    EXPECT_GE(0, ndiff);</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;}</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="comment">// test on IVFFlat and a VectorTransform</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;TEST(MERGE, merge_flat_vt) {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    <span class="comment">// here we have to retrain because of the vectorTransform</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    <a class="code" href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a> rot(d, d);</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    rot.init(1234);</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a> quantizer (d);</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    { <span class="comment">// just to train the quantizer</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> iflat (&amp;quantizer, d, nlist);</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> ipt (&amp;rot, &amp;iflat);</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        ipt.train(nb, cd.database.data());</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    }</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> * ipt = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a> (</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;             <span class="keyword">new</span> <a class="code" href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a> (rot),</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;             <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&amp;quantizer, d, nlist)</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        );</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        ipt-&gt;<a class="code" href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        index_shards.add_shard (ipt);</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    }</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    <span class="keywordtype">size_t</span> prev_ntotal = index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="keywordtype">int</span> ndiff = compare_merged(&amp;index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    EXPECT_EQ (prev_ntotal, index_shards.<a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>);</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    EXPECT_GE(0, ndiff);</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;}</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">// put the merged invfile on disk</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;TEST(MERGE, merge_flat_ondisk) {</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <a class="code" href="structTempfilename.html">Tempfilename</a> filename;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        <span class="keyword">auto</span> ivf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&amp;cd.quantizer, d, nlist);</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        <span class="keywordflow">if</span> (i == 0) {</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;            <span class="keyword">auto</span> il = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a> (</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;                ivf-&gt;nlist, ivf-&gt;code_size,</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;                filename.c_str());</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;            ivf-&gt;replace_invlists(il, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;        }</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;        index_shards.add_shard (ivf);</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    }</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    <span class="keywordtype">int</span> ndiff = compare_merged(&amp;index_shards, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    EXPECT_EQ(ndiff, 0);</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;}</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="comment">// non use ondisk specific merge</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;TEST(MERGE, merge_flat_ondisk_2) {</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    <a class="code" href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a> index_shards(d, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    index_shards.own_fields = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; nindex; i++) {</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        index_shards.add_shard (</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;             <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a> (&amp;cd.quantizer, d, nlist));</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    }</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    EXPECT_TRUE(index_shards.<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    index_shards.<a class="code" href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">add_with_ids</a>(nb, cd.database.data(), cd.ids.data());</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    <span class="keywordtype">int</span> ndiff = compare_merged(&amp;index_shards, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    EXPECT_GE(0, ndiff);</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;}</div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00166">IndexIVF.h:166</a></div></div>
<div class="ttc" id="structfaiss_1_1RandomRotationMatrix_html"><div class="ttname"><a href="structfaiss_1_1RandomRotationMatrix.html">faiss::RandomRotationMatrix</a></div><div class="ttdoc">Randomly rotate a set of vectors. </div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00117">VectorTransform.h:117</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a1f771d50133494f682f05c9ab9e39ad9"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a1f771d50133494f682f05c9ab9e39ad9">faiss::IndexShards::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00426">MetaIndexes.cpp:426</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00079">IndexFlat.h:79</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a83391295650370e8987358a898bb2cca"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a83391295650370e8987358a898bb2cca">faiss::IndexShards::search</a></div><div class="ttdeci">void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00487">MetaIndexes.cpp:487</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00251">VectorTransform.h:251</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00025">IndexIVFFlat.h:25</a></div></div>
<div class="ttc" id="structTempfilename_html"><div class="ttname"><a href="structTempfilename.html">Tempfilename</a></div><div class="ttdef"><b>Definition:</b> <a href="test__merge_8cpp_source.html#l00063">test_merge.cpp:63</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a7a1d5eec194db0977b2318c6ed6a2b86"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">faiss::IndexIVF::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">Trains the quantizer and calls train_residual to train sub-quantizers. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00424">IndexIVF.cpp:424</a></div></div>
<div class="ttc" id="structCommonData_html"><div class="ttname"><a href="structCommonData.html">CommonData</a></div><div class="ttdef"><b>Definition:</b> <a href="test__merge_8cpp_source.html#l00100">test_merge.cpp:100</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html_a2e06889521c566525011eb46cc97cda6"><div class="ttname"><a href="structfaiss_1_1IndexShards.html#a2e06889521c566525011eb46cc97cda6">faiss::IndexShards::add</a></div><div class="ttdeci">void add(idx_t n, const float *x) override</div><div class="ttdoc">supported only for sub-indices that implement add_with_ids </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8cpp_source.html#l00420">MetaIndexes.cpp:420</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00065">Index.h:65</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7"><div class="ttname"><a href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">faiss::Index::search</a></div><div class="ttdeci">virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0</div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html_ae5ec3f184eb211e7d6e204082b52c8c0"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">faiss::IndexPreTransform::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">! the sub-index </div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00256">VectorTransform.h:256</a></div></div>
<div class="ttc" id="structfaiss_1_1OnDiskInvertedLists_html"><div class="ttname"><a href="structfaiss_1_1OnDiskInvertedLists.html">faiss::OnDiskInvertedLists</a></div><div class="ttdef"><b>Definition:</b> <a href="OnDiskInvertedLists_8h_source.html#l00052">OnDiskInvertedLists.h:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html"><div class="ttname"><a href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00086">MetaIndexes.h:86</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00069">Index.h:69</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a1c4fc9d874d9492ee0ea27a5be388fa7"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">faiss::Level1Quantizer::nlist</a></div><div class="ttdeci">size_t nlist</div><div class="ttdoc">number of possible key values </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00034">IndexIVF.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a46d1aeddb60643c5b3f096147c3e028f"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">faiss::IndexIVF::code_size</a></div><div class="ttdeci">size_t code_size</div><div class="ttdoc">code size per vector in bytes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00171">IndexIVF.h:171</a></div></div>
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